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Hybrid uncertainty-based design optimization and its application to hybrid rocket motors for manned lunar landing

Chinese Journal of Aeronautics 2017年第2期30卷 719-725页

作者： Zhu Hao Tian Hui Cai Guobiao School of Aeronautics Science and Engineering Beihang University Beijing 100083 China

Design reliability and robustness are getting increasingly important for the general design of aerospace systems with many inherently uncertain design *** paper presents a hybrid uncertainty-based design optimization（UDO） method developed from probability theory and interval *** of the uncertain design parameters which have sufficient information or experimental data are classified as random variables using probability theory,while the others are defined as interval variables with interval *** a hybrid uncertainty analysis method based on Monte Carlo simulation and Taylor series interval analysis is developed to obtain the uncertainty propagation from the design parameters to system *** design optimization strategies,including deterministic design optimization（DDO）,probabilistic UDO and hybrid UDO,are applied to the conceptual design of a hybrid rocket motor（HRM） used as the ascent propulsion system in Apollo lunar *** comparison,the hybrid UDO is a feasible method and can be effectively applied to the general design of aerospace systems.

关键词： Hybrid rocket motor Hybrid uncertainty-based design optimization manned lunar landing Uncertainty analysis

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Uncertainty analysis and probabilistic design optimization of hybrid rocket motors for manned lunar landing

引用

Science China(Technological Sciences) 2015年第7期58卷 1234-1241页

作者： ZHU Hao TIAN Hui CAI GuoBiao BAO WeiMin School of Astronautics Beihang University China Aerospace Science and Technology Corporation

To obtain a conceptual design for a hybrid rocket motor(HRM)to be used as the Ascent Propulsion System in the Apollo lunar module,the deterministic design optimization(DDO)method is applied to the HRM *** on the results of an uncertainty analysis of HRMs,an uncertainty-based design optimization(UDO)method is also adopted to improve the design *** HRM design process,which is a multidisciplinary system,is analyzed,and a mathematical model for the system design is established to compute the motor performance from the input parameters,including the input variables and model *** input parameter uncertainties are quantified,and a sensitivity analysis of the model parameter uncertainties is conducted to identify the most important model parameter uncertainties for *** DDO and probabilistic UDO methods are applied to conceptual designs for an HRM to be used as a substitute for the liquid rocket motor(LRM)of the Ascent Propulsion *** conceptual design results show that HRMs have several advantages as an alternative to the LRM of the Ascent Propulsion System,including nontoxic propellant combination,small motor volume,and comparable functions,such as restarting and *** of the DDO and UDO results indicate that the UDO method achieves more robust and reliable optimal designs than the DDO *** probabilistic UDO method can be used to develop better conceptual designs for HRMs.

关键词： hybrid rocket motor deterministic design optimization uncertainty-based design optimization sensitivity analysis manned lunar landing

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